Any guesses what this clicking/creaking sound is? Details on what I’ve already tried in comments

I’ve regreased and reinstalled BB, crank, chainrings, and pedals with no change. I’ve also tried other pedals, which is the only thing I can easily swap out (no other compatible wheels). I haven’t reproduced the noise without actually riding.

I mostly notice this noise when I’m in the small ring, but it does happen in the big ring as well.

Seems to be tied to crank revolutions but not 1:1.

Sometimes, I get a much more pronounced creak (longer creaking noise, less clicky), which turns back into this normal click after brief backpedaling.

It’s a thread-together BB86 bottom bracket, am I wrong that replacing the BB is a reasonable next step at this point? The bearings don’t feel bad in my hands.

Can you throw in a different rear wheel and listen? If it remains, swap the bb

In my case, one of the derailleur hanger had a loose screw.
Battled with that noise for months, eventually had to bring the bike to my LBS.
They found it quite fast. Fixed everything !

Believe it or not I had a two creaks I could not locate. I started systematically greasing.

1st went on the rear derailleur hanger

2nd – was the water bottle screws. Enough flex in the carbon to create a click on the pedal strokes under load.

Crazy – but did find them.

Have you checked the chainring bolts?

I can’t tell what crank that is. Any chance that’s one of the Ultegra that was recalled? I remember they sent out an audio file with a clicking as a diagnostic.

Probably not that but idk.